<html>
<body>
<h2>Hello World!</h2>
<div>
    <form action="/query" method="post">
        用户名：<input type="text" name="userName" value="张三"><br>
        <input type="submit" value="权限验证">
    </form>
    <form action="/getName" method="post">
        用户名：<input type="text" name="userName" value="李四"><br>
        <input type="submit" value="权限验证">
    </form>
    <form action="/hello" method="post">
        用户名：<input type="text" name="userName" value="李四"><br>
        <input type="submit" value="权限验证">
    </form>
</div>
</body>
</html>
